US is propping up a war with Venezuela right now because of "humanitarian blablabla" at the same time there's children starving because of the Yemen's war the US is a sponsor.
There's absolutely no morals in geopolitics. If you hear about it, be confident it's bullshit. Sad but true.
"Yet people continue to argue how communism doesn't work"
The your scale and what this news story says are just totally on different planets.
Perhaps because there's a long parade of examples of it not working, and Cuba is not an unqualified success story -- not now nor for the decades it was propped up by the Soviet Union.
It's obviously not as simple as one system being dominant over another, but both systems clearly do work just fine, as it's unfair to ignore the substantial reforms that happened in capitalist countries due to work of socialist organizers pushing for higher labor standards.
Scarcity is a necessity for capitalism. Do you even understand how capitalism works beyond "big corporation bad"?